Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sach » chieu sach, thien hach, hieu cach
hanh trang » canh tranh, hanh trinh, minh trang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu sach - ((hanh trang) or (thanh trung)) cua nhung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sach - ((hanh trang) OR (thanh trung)) cua nhung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - ((hanh trang) or (thanh trung)) cua nhung cong dan van ban*.